Why are you asking us for reassurances? Nobody here has any real idea what is causing your problems. *You* need to do a lot more work.

But... given how broken Pro tools 11/12 etc where.... If you are on old Pro Tools 12.4 and are getting AAE CPU error messages, the update to try to address that should first be Pro Tools 2019.5 or later, and then lots of standard troubleshooting stuff if you still have issues. Still stuck after doing all that ask back here. Then maybe consider a hardware upgrade.

If you want feedback on current systems, post a SiSoft Sandra report, sketchy info on Windows system is hardly worth providing.

And ditto for what you are considering, what exact mobo, disks drives, etc.

How large are your current sessions? what IO buffer size abd sampel rate are you running at? How many VI etc. Give us *some* clue what you are doing.

What interface are you using/what exact driver version. What *exact* AAE errors are you getting? Is your PC fully optimized, every last thing done? What exact troubleshooting have you tired (removing all .aaxplugin files, trashing prefs, etc?). What exact recoding drive make/model are you recording to?

Start at "Help us help You" up the top of each DUC web page.

If replying take this post and separate out each question and try reply to them all.